Question:
A charged particle enters a uniform magnetic field perpendicular to its velocity. If the field is suddenly doubled, the radius of its path becomes:
A charged particle enters a uniform magnetic field perpendicular to its velocity. If the field is suddenly doubled, the radius of its path becomes:
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Radius is inversely proportional to magnetic field strength.
Updated On: Jan 5, 2026
- Half
- Double
- Four times
- Remains same
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The Correct Option is A
Solution and Explanation
Radius of circular path,
\[
r=\frac{mv}{qB}
\]
If \(B\) is doubled, \(r\) becomes half.
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